Supercapacitor Separator Membrane from Japan
Ultra-thin microporous membranes separating electrodes in electric double-layer capacitors (supercapacitors). HTS 8532.90.00.00 applies as parts of fixed electrical capacitors.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Pore size (nm) and ionic conductivity specs essential for capacitor parts classification
• Avoid paper classification (4805) by proving synthetic membrane composition and function
• Energy storage density ratings tie separator to supercapacitor performance requirements